Weather forecast: the earliest cold wave hit in history, and many provinces issued notices to keep out the cold! how many degree?

Cold wave refers to the continuous invasion of air from the cold areas in the north into the south, which makes it extremely difficult to cool down, accompanied by rainfall and strong winds.

This natural phenomenon has a great influence on people's daily life and agricultural production.

Because of the geographical location of China, every winter, China will have a cold wave.

However, this year has not officially entered the winter. Just in autumn, some areas issued a formal cold wave warning.

This cold wave warning should be the earliest cold wave warning in history.

The cold wave struck, and the temperature in many provinces plummeted.

According to news reports, from June 3 10 to June 6 10, the temperature in most parts of central and eastern China will drop by 8 degrees to 12 degrees, involving many provinces and cities.

In many northern provinces and cities, including Northeast China, Inner Mongolia, Hebei, Shanxi, Shaanxi and other provinces and cities, the temperature drop can reach 16 degrees, and the temperature drop in central Inner Mongolia, eastern Heilongjiang, Hubei, Anhui and other places can even reach 18 degrees or more.

In addition, several provinces and cities in the north have experienced moderate to heavy rain for several days, which has seriously affected people's normal travel and damaged some crops.

It is estimated that around 65438+10.6, the lowest temperature in North China and Northeast China will reach 0 degrees, and the lowest temperature in Henan, Shandong and South China will reach about/kloc-0.0 degrees.

In order to prevent the cold wave from expanding its influence, many provinces have issued cold-proof guidelines.

The cold wave really affected people's normal life, especially the sudden drop in temperature, which caused many people to catch a cold.

In order to prevent the adverse effects of the cold wave from further expanding, several provinces have officially issued cold-proof guidelines to help residents tide over the difficulties.

First of all, we should pay attention to warm-keeping measures, prepare thick clothes and prepare for the cold in crop production; People living in rural areas or bungalows should pay attention to their own doors and windows and some temporary structures, which are easy to be blown away by strong winds and hurt others by accident; When doing outdoor work, we must take preventive measures and pay attention to safety.

If there are cardiovascular patients at home, or there are old people and children, you must take good care of them. These people are sensitive to the change of temperature, so keep warm in advance, and it is best not to let them go out to prevent accidents.

In order to prevent crops from being damaged, we should do these jobs well.

When the cold wave strikes, some crops should be the most seriously damaged, and some crops that are not cold-tolerant are directly frozen to death, so we must take preventive measures from the following points:

Today, heavy rainfall has occurred in some areas. If the rainfall continues, it is likely to affect the root activity of vegetables.

Therefore, before the rain comes, we can first give the vegetables precipitation, improve the adaptability of the roots of vegetables, and also play a role in cooling the soil.

The sudden drop in temperature is likely to cause some vegetables with low cold tolerance to freeze to death directly. Some alginic acid or amino acid can be properly sprayed on the leaves of these vegetables to improve the pollution control stimulator, which can improve the cold tolerance of vegetables to a certain extent.

If you have the ability, it is best to transplant this plant into a greenhouse to ensure the temperature in the greenhouse. You can also use plastic film to enhance the ground insulation and smoke if necessary.

When the temperature drops suddenly, the temperature difference between inside and outside the greenhouse becomes larger, which will increase the humidity in the greenhouse and easily make vegetables sick.

Therefore, we must do a good job in humidity control, open the greenhouse 15 minutes every morning, ventilate with the outside, and exhaust the moisture in the greenhouse to prevent the vegetables in the greenhouse from getting sick.

When the temperature is normal, there are many small pests outside, which are very harmful to vegetables.

After the temperature drops, small pests will try to avoid the cold in the greenhouse, which will easily lead to the concentration of pests in the greenhouse. Therefore, it is necessary to do a good job of prevention, put insect nets in the vents, and clean up weeds and garbage around the greenhouse in time to prevent pests from getting together.

Finally, we should pay attention to the influence of strong winds on agricultural production.

Some areas are seriously affected, and the wind can reach 6-7. Everyone must check the equipment in the shed in advance, such as laminating lines and ground anchors, and replace them in time if they are damaged or aging.

Some temporary structures should be removed in time and placed in safe places to prevent strong winds from being blown to other places and causing safety accidents.

In addition, nearby wires should also be placed to prevent fire.

The cold wave is coming. Not long ago, many areas in the south issued high temperature warnings. Only these days, the temperature has plummeted.

Coupled with the National Day holiday, this cooling will inevitably have a negative impact on people's normal life, transportation, production and life.

Therefore, we must seriously deal with this cold wave, make relevant preparations, take preventive measures, prepare thick clothes, minimize going out, and protect the safety of ourselves and our families.